28-18s=-21

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Solution for 28-18s=-21 equation: 



28-18s=-21

We move all terms to the left:

28-18s-(-21)=0

We add all the numbers together, and all the variables

-18s+49=0

We move all terms containing s to the left, all other terms to the right

-18s=-49

s=-49/-18

s=2+13/18

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